The wires from the airbag electrical system connect through the
base of the clock spring's electrical connector to the end of the
conductive ribbon. The other end of the ribbon is attached through
the wires on the top of the clock spring's electrical connector to
the air bag unit. As the steering wheel revolves, the conductive
ribbon coils and uncoils allowing electrical contact between the
electrical systems.

What is Airbag Clockspring:Hundreds of car parts work together to allow the driver control
over the vehicle. The clock spring is one of those parts that works
directly with the steering wheel. It allows the car's wheel to be
turned in a circle while maintaining an electrical connection with
the wiring system.